JPH01257556A - Deburring machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a deburring device using a grindstone.

(Prior Art) An important issue in the manufacturing industry is how to efficiently remove burrs that are generated when cutting a workpiece. If the workpiece is turned and has a simple shape, the burr can be easily removed by simply applying a file to the deburring part of the workpiece.

(Problem to be solved by the invention) However, if the deburring part of the workpiece has an uneven shape, the burr cannot be easily removed just by applying a file, and deburring is done manually. I have no choice but to rely on it. Mechanical deburring methods include sandblasting, chicot beaning, barrel processing, and water jetting, but these methods grind not only the deburred area but also unnecessary parts of the burr.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a deburring device that can efficiently remove burrs by grinding only the deburred portion of a workpiece having a complicated shape.

(Means for Solving the Problems) A deburring device according to the present invention includes a plurality of workpiece supporting and rotating means for supporting and rotating a workpiece, and a grinding wheel for deburring by contacting a deburring portion of the workpiece. a grinder, a suspension means for suspending each of the grinders and urging each of the grinding wheels downward and in the direction of the workpiece by its own weight; a feeding means that is movable substantially along a line connecting the center, and each of the grinders is oriented in such a manner that each of the grinders is lifted up by the rotating work when each of the grinding wheels abuts on the rotating work on each of the suspension means. It is characterized by being suspended from.

(Function) The workpiece is placed at a predetermined position on the workpiece support rotation means and rotated, and each grinding wheel of each grinder suspended by each suspension means comes into contact with the deburring portion of the workpiece to form its uneven shape. Follow the steps and rock to remove burrs. At this time, each grinder is suspended from each suspension means in a direction in which each grinding wheel is lifted by the workpiece, so that the grinding wheels are prevented from digging into the workpiece. Further, when each grinding wheel is worn out and reduced in diameter, each grinding wheel can be continuously used by feeding each grinding wheel toward the workpiece contacting portion using each feeding means ().

(Embodiment) FIG. 1 shows a first embodiment of a deburring device according to the present invention. This device is equipped with a workpiece supporting and rotating means 2 that supports and rotates the workpiece, and two air systems equipped with, for example, grinding wheels 3a and 3b that come into contact with the deburring portion of the workpiece and remove burrs, on the top surface of the bed 1. grinder 4a,
4b, and each grinding wheel 3a by suspending each grinder 4a, 4b.

Suspension means 5a, 5b push the grinding wheels 3b downward and toward the workpiece by their own weight, and each suspension means 5a, 5b is supported on a line connecting the workpiece contact portion of each grinding wheel 3a, 3b and the center of rotation. Infeed means 6a, 6b movable substantially along
and each feeding means 5a.

6b and rotating the grinding wheels 3a, 3b from the upper retracted position to the workpiece contact position while lowering the grinding wheels 3a, 3b from the upper retracted position.

The workpiece support rotation means 2 includes a bearing 8 erected on the upper surface of the bed 1 and a workpiece support shaft 9 rotatably supported in the vertical direction at the center of the bearing 8. In the middle of bed 1 there is Tanabata 10 and reduction gear 1.
1 and a power transmission device 12 are attached. The support shaft 9 can be replaced depending on the type of workpiece, and is started at a low speed of about 1 minute per minute. On the other hand, each grinding wheel 3a, 3b is rotated by each air grinder 4a, 4b.
It rotates at a high speed of about 18,000 times per minute.

The workpiece support and rotation means 2 is provided with a jetter 13. The ejector 13 includes a frame 14 disposed around the support shaft 9, a stopper rod 15 pivotally attached to one end of the frame 14, a guide bracket 16 for guiding the stopper rod 15, and a frame 14. It is equipped with an air cylinder 17 that pushes up the air. Cylinder 17 is frame 1
4 is pushed up, the work set on the support shaft 9 is pushed up and handled from the support shaft 9, and at a certain position the collar 15a at the lower end of the stopper 5 hits the guide bracket 16 to prevent movement. The frame body 14, which is still on the upper side, rotates around the pivot point with the rod 15 and becomes oblique, and the workpiece on the frame body 14 is released to a predetermined position.

The workpiece is, for example, a clutch drum 18 in an automobile automatic transmission as shown in FIG.
It is. To be more precise, this clutch drum 18 has an inner circumferential portion and an outer circumferential surface formed in the shape of uneven teeth as shown in FIG.
8a is turned, and at this time, burrs are generated on the inner edge 18b and the outer edge 18c. In this way, when the workpiece is the clutch drum 18, it is necessary to remove burrs on both the inner and outer circumferences along the tooth profile.

The deburring device in this embodiment is designed to be able to deburr the inner and outer circumferences at the same time. For example, the support shaft tip 9 of the workpiece support rotation means 2
A is a spline shaft that can fit into a spline groove 186 formed in the hub of the clutch drum 18, and two grinding wheels 3a.

3b, the clutch drum 1 rotates in the free direction, that is, in a position where each grinding wheel 3a, 3b is approximately symmetrical with respect to the clutch drum 18, that is, each grinding wheel 38, 3b rotates.
8, the inner grinding wheel 3a can simultaneously deburr the inner edge 18b of the clutch drum 18, and the outer grinding wheel 3b can simultaneously deburr the outer edge 18C. Each of them is configured to be adjustable.

Both of the suspension means 5a and 5b, as shown in FIG.
Holding blocks 20a, 20b that hold air grinders 4a, 4b with abrasive wheels 3a, 3b fixed to their tips;
and a support block 23a suspended vertically rotatably via shafts 22a, 22b from flanges 21a, 21b erected on both sides of the upper surfaces of the holding blocks 20a, 20b.
, 23b, and guide plates 25a, 2 which are rotatably mounted with shafts 24a, 24b directed perpendicularly to the upper surfaces of the support blocks 23a, 23b.
5b, and a slide plate 26a which is guided by and movably inserted into the guide plates 25a and 25b.
26b, and a slide block 28.b, which is provided with slide plates 26a, 26b at its lower part and is rotatably inserted into guide shafts 27a, 27b that constitute a part of feeding means 6a, 6b, which will be described later. , a, 28b, and stopper plates 29a, 29b rotatably inserted into the guide shafts 27a, 27b so as to sandwich the slide blocks 28a, 28b from the front and back. The air grinder 4a is supported by the guide shaft 27a and suspended with its grinding wheel 3a disposed on the front side, and the other suspension means 5b is supported by the outer side shaft 27b, so that the air grinder 4b can 3b is placed on the rear side and suspended. Furthermore, as shown in FIG. 5, the air grinders 4a and 4b are attached to holding blocks 20a and 20b, respectively, about shafts 22a and 22b so that their tips are lowered by their own weight. The downward movement of the tip of each air grinder 4a, 4b is performed by a holding block 20a on the rear end side of the air grinder 4a, 4b.

A compression coil spring 30a is interposed between the upper surface of 20b and the lower surfaces of slide plates 26a and 26b.

30b, so that when the deburring portion of the workpiece has vertical unevenness, each of the grinding wheels 113a and 3b can move up and down smoothly following the unevenness. Also, a slide block 28a.

28b is movable in the axial direction on the guide shafts 27a, 27b, and after determining the appropriate contact position of the grinding wheels 3a, 3b with the work, the stopper plates 29a, 28b are movable on the guide shafts 27a, 27b.
The position is fixed by tightening the set bolts 31a, 31b on the upper surface of 9b.

Further, the slide blocks 28a, 28b are rotatable around the guide shafts 27a, 27b, and the slide plates 26a, 26b on the lower surface are attached to the support block 27a.
Guide plates 25a and 25b on the upper surfaces of a and 23b are capable of swinging in the left-right direction. Therefore, as shown in FIG. 6, when the holding blocks 20a, 20b assembly including the guide plates 25a, 25b is shifted to the left with respect to the slide blocks 28a, 28b including the slide plates 26a, 26b, the guide shaft 27a, 27
Since the straight line A connecting the center of point b and the center of the grinding wheels 3a and 3b is inclined with respect to the vertical line B, the suspension means 5al and 5b as a whole are
Guide shaft 27a.

Except for the stopper plates 29a and 29b fixed to the guide shafts 27b, they are urged to rotate around the guide shafts 27a and 27b by their own weight so as to face the vertical line 8 direction, and the deburring portion of the workpiece has unevenness in the left and right direction. In this case, the grindstone 113
A and 3b follow this unevenness so that they can swing smoothly.

The angle a between the vertical line B and the straight line is the angle a between the guide plate 2
Slide plates 26a, 25b for 5a, 25b
The grinding wheels 3a, 3 are fixed by tightening the set bolts 32a, 32b provided on the workpiece.
The hit amount of b is adjusted.

Further, the hanging means 5a, 5b are connected to the support block 23a.
, 23b and the guide plates 25a, 25b are the shaft 24a.
, 24b, so that the seventh
As shown in the figure, the orientation of the air grinders 4a, 4b with respect to the guide shafts 27a, 27b can be changed, thereby making it possible to determine the horizontal inclination angle of the grinding wheels 3a, 3b with respect to the workpiece. For example, when the workpiece is the clutch drum 18, and as shown in FIG.
is in contact with the rotating direction of the workpiece 18 in the trailing direction, and furthermore, the inclination angle is made to almost match the inclination angle of the tooth-shaped slope 18a serving as a counter surface, thereby preventing the grinding wheel medium 3b from biting into the slope 18a. have a role to play. The same applies to the inner whetstone 3a. The tilt angle is the guide plate 25a with respect to the shafts 24a and 24b.
.

It is fixed by tightening the set bolts 33a and 33b provided at 25b.

Next, the feeding means 5a and 5b will be explained with reference to FIG. Each feeding means 6a, 5b has a ]-shaped feeding base 35 with support shafts 34a, 34b protruding from the rear surface.
a, 35b, and a feed base 35a.

Slide blocks 40a, 4.35b are slidably supported by two guide rods 37a, 37b installed between both walls 36a, 36b, and slid by handles 38a, 38b and feed screws 39a, 39b. Ob and a guide shaft 27a protruding from the front surface of the slide block 408.40b.

27b. The support shaft 348.34b is inserted through and fixed to the mounting plate 41 so that the feed tables 35a, 35b form a certain angle C with respect to the vertical direction.

This angle C is determined by the workpiece support shaft 9 as shown in FIG.
The workpiece 18 and each grinding wheel 3a supported by.

12 connecting the contact part with 3b and the center of the grinding wheels 3a, 3b
The moving direction of the slide blocks 40a and 40b is set to substantially follow C. By doing this, even if each grinding wheel 3a, 3b is worn out and reduced in diameter, the handle 3
Turn slide blocks 40a and 40b by turning 8a and 38b.
By lowering the suspension means 5a, 5b, the entire suspension means 5a, 5b moves along the moving direction of the slide blocks 40a, 40b, so that the grinding wheels 3a, 3b abut against the workpiece 18 at approximately the same position, and the grinding wheels 3a, 3b can be used as is for a long period of time. In addition, the outer support shaft 3
4b is inserted into an elongated hole 41a provided in the mounting plate 41 via a collar 42, and is fastened and fixed with a nut 43, and the insertion position in the elongated hole 41a of the support shaft 34b is determined. By changing the position, it is possible to correspond to different sizes of workpieces.

Furthermore, as shown in FIG. 10, the height positions of the outer grinding wheel 3b for deburring one outer edge of the workpiece 18 and the inner grinding wheel 3a for deburring the inner edge are different. At the same time, the grinding wheels 3a, 3 at the workpiece contact part
The angle between the tangent line of b and the wall surface of the workpiece 18, that is, the contact angle d, is different. Therefore, the slope of the line C connecting the workpiece contact portion and the center of the grinding wheels 3a, 3b differs depending on the inner and outer grinding wheels 3a, 3b. The contact angle d is normally 45 degrees, but depending on the shape of the workpiece, it is necessary to optimally set the contact angle d individually to prevent secondary burrs from being generated by the grinding wheels 3a and 3b. be. In this deburring device, this is achieved by adjusting the feeding passage by the handles 38a, 38b and the contact suspension of each grinding wheel 3a, 3b shown in FIG.

In addition, in the feeding means 6a, 6b, since the feeding direction of the slide blocks 40a, 40b is constant, if it is not possible to match this with the workpiece contact direction in each grinding wheel 3a, 3b, these The support shafts 34a of the feeding means 5a, 6b are aligned so that
, 34b can be attached to the mounting plate 41 by adjusting their rotation. In this way, each whetstone 3a,
Even if the diameter of 3b is reduced due to wear, the contact angle d should be
It becomes possible to use the grinding wheels 3a, 3b for a long time while maintaining the l1 set value.

Next, referring to FIG. 9 again, the transfer means 7 will be explained. The transfer means 7 includes the respective sending means 6a and 6b.
a mounting plate 41 for attaching and supporting the support shafts 34a and 34b; a column 44 fixed to the bearing portion 41b in the center of the mounting plates 1 to 41;
a bearing 45 fixed to the upper surface of the bed 1 with its lower end rotatably supported, a swing arm 46 fixed to the column 44, and a roller 47 rotatably attached to the tip of the swing arm 46. , a swash plate cam 48 fixed to the top surface of the bed 1 with a cam surface 48a for guiding the roller 47, an air cylinder 49 connected to the 2A end of the swing arm 46, and a base +3 of the air cylinder 49.
A stay 5 fixed to the bed 11 to support the
0, and a stopper 51 fixed to the upper surface of the bed 1 to restrict the amount of protrusion of the air cylinder 49.

A support plate 53 having a height adjustment bolt 52 is fixed to one of the solid bearing parts 41b of the mounting plate 41, and a lower end 52a of the adjustment bolt 52 is in contact with the upper end surface of the column 44. Therefore, by turning the adjustment bolt 52, the brightness of the mounting plate 1-41 with respect to the column 44 can be adjusted, and as a result, the grinding wheels 3a, 3b1
1) Height can be adjusted. After this height adjustment,
By tightening the set bolt 54 provided on the mounting plate bearing portion 41b to the ram 44, its height position is fixed, and the mounting plate 41 becomes rotatable together with the column 44.

The swing arm 46 is attached to the column 4 by tightening a bearing part 46a with a flange in the center with a bolt 55.
4, the distal end of which is split into two parts, and a roller 47 is rotatably mounted thereon by a shaft 56.

The base end of the swing arm 46 is connected to a floating joint 57 on the bushing rod 49a of the air cylinder 49.
The connecting rod 58 is attached via a shaft 59 so as to be rotatable in the horizontal direction. In addition, 11 parts of the air cylinder 49 are connected to the stay 50 via the shaft 60.
It is attached to the upper end of the unit so that it can rotate vertically.

Now, when the air cylinder 49 is driven and the bushing rod 49a is pushed out, the ram 44 rotates via the swing arm 46, and the roller 47 rolls on the cam surface 48a of the swash plate cam 48 and descends. do. As a result, the column 44 also slides downward within the bearing 45, and the grinding wheels 3a and 3b, which were in the upper left retracted position,
The workpiece 18 is rotated while descending around it, and is transferred to the so-called contact position of the workpiece 18 shown in FIG. At this time, since the swing arm 46 moves up and down at the same time as the swing arm 46 rotates, the air cylinder 49 connected to the swing arm 46 has its base end attached to the stay 50 so that it can move up and down, and the swing arm 46 rotates. Distance changes due to movement are absorbed by the floating joint 57. and grinding wheel 3a
, 3b to reach appropriate work contact positions, the amount of protrusion of the air cylinder 49 is adjusted by the adjustment bolt 61 of the stopper 51, and the height positions of the grinding wheels 3a, 3b are adjusted as follows. Cam surface 48 of swash plate cam 48
The adjustment is made by adjusting the position a, and the position is fixed by the set bolt 62.

As described above, this deburring device has many adjustment parts, but the procedure for adjustment is to first adjust each suspension means 5a while each grinding wheel 3a, 3b is new.

5b on the guide shafts 27a, 27b to determine the appropriate position of the grinding wheels 3a, 3b relative to the workpiece, the transfer amount and height position are adjusted by the transfer means 7, and then the respective feed means 6a, 6b The appropriate contact state of each grinding wheel 38.3b with respect to the workpiece is adjusted by each suspension means 5a, 5b. Further, the motor 10.1, the four cylinders 17, and the air grinders 4a, 4b are controlled by a control circuit not shown. Then, a signal is input to this control circuit to rotate the workpiece 18 in the right direction as shown in FIG.
When a and 3b are rotated in the same left direction when viewed from the front of the device, each grinding wheel 3a and 3b comes into contact with the workpiece 18 at a symmetrical position and in the same clearance direction with respect to the rotational direction of the workpiece 918. . In other words, the outer grinding wheel 3b contacts the outer edge 18c of the workpiece 18, and the inner grinding wheel 3a contacts the inner edge 18b of the workpiece 18 following the uneven shape of the workpiece 18 in an optimal contact state without biting into it, thereby removing burrs. can be done. When deburring is completed, the transfer means 7 is returned to its original left evacuation position by the air cylinder 49, and the work piece is ejected to a predetermined position by the ejector 13.

FIG. 12 shows a second embodiment of the deburring device according to the invention. In the above embodiment, the same distance is two consecutive T.
This embodiment has four air grinders 4a, 4b, 4c, 4d, whereas the
It is suitable for deburring multiple locations on different workpieces.

In the figure, this workpiece is, for example, a clutch drum 64 having a hub 63 in the center, and the inner and outer circumferential surfaces of the drum 64,
The inner and outer circumferential surfaces of +3 and the hub 63 are each formed into an uneven tooth shape. Similarly, the clutch drum 64 has its respective end faces 63a, 64a turned, and the respective end faces 63a, 64a are turned.
4a inner edges 63b, 64b and outer edges 63
Burrs occur at c and 64c. In this case, in addition to the configuration of the same device of the previous embodiment, the inner air grinder 4a
An air grinder 4c is installed in parallel on the outside of the air grinder 4c in which the grinding wheel 3C faces the same direction as the grinding wheel 3a of the air grinder 4a and contacts the inner edge 63b of the hub 63, and a grinding wheel 3d is installed inside the outer air grinder 4b. is the hub 63 facing the same direction as the grinding wheel 3b of the air grinder 4b.
By arranging the air grinder 4d that abuts the outer edge 63c of the outer edge 63c, each edge can be deburred at the same time. In addition, each added grinder 4c, 4
d constitutes the same means as in the previous embodiment, and the same adjustments are made.

In this embodiment, when the clutch drum 64 is rotated in the center direction and each of the grinding wheels 3a, 3b, 3c, and 3d is rotated in the same left direction when viewed from the front of the device, each of the inner grinding wheels 3a
, 3c, etc. on each outer grinding wheel 3b.

3d are in symmetrical positions with respect to the clutch drum 64, and their rotational directions abut against the clutch drum 64 in the same escape direction. Of course, the inner whetstone m38 is arranged on the inner edge 64b of the outer circumference of the clutch drum 64, in parallel with the whetstone m3a. The E wheel 3C is attached to the inner edge 63b of the hub 63, and the outer grinding wheel 3b is attached to the outer edge 64c of the outer circumference of the clutch drum 64.
．． : The middle 3d of the grindstones installed in parallel is the outer edge 63 of the hub 63
c, each of the workpieces 64 is brought into contact with the workpiece 64 in the direction in which it is lifted, and deburring can be performed in an optimal contact state without digging into the workpiece 64 following its shape.

Further, FIG. 13 shows a third embodiment of the present invention. In the figure, the mouth work 65 is made of, for example, a cast metal, and has a thick outer circumferential portion 65a, and has an uneven tooth shape on its inner and outer circumferential surfaces. In this case, the air grinders 4a, 4b on the inside and outside of the first real FM@ and their respective grinding wheels I3a, 3b are oriented in the same forward direction on the right side in the figure with respect to the workpiece 6 and 5. By arranging them on the same side and bringing the inner grinding wheel 3a into contact with the outer edge 65b of the work 65 and the outer grinding wheel 3b against the inner edge 65C of the work 65, both edges can be deburred at the same time. . That is, when the workpiece 65 is rotated to the right, the inner grinding wheel 38 is rotated to the right when viewed from the front of the device, and the outer grinding wheel 3b is rotated to the left when viewed from the front of the spacer d, each grinding wheel l13a , 3. b comes into contact with the workpiece 65 on the same side and in the same escape direction with its rotational direction relative to the rotational direction of the workpiece 65. Therefore, the inner grinding wheel 3
a is attached to the outer grinding wheel 3 on the outer side 65b of the workpiece 65.
b is attached to the inner edge 65G of the work 65.
The deburring can be carried out in an optimal contact state without digging into the uneven shape by making contact in the direction of being lifted up.

In each of the embodiments described above, the grinding wheel is fed to the workpiece by the transfer means 7, but as shown in FIG. By changing the position, the workpiece may be brought closer to the grindstone.

(Effects of the Invention) As shown in F-F, the deburring device according to the present invention includes a workpiece supporting and rotating means that supports and rotates the workpiece, and a grinding wheel that comes into contact with the deburring portion of the workpiece to remove the burr. a plurality of grinders, a suspension means for suspending each grinder and urging each grinding wheel downward and in the direction of the workpiece, and a workpiece contacting portion of each grinding wheel for supporting each suspension means; It is equipped with one stage of feed that can move almost along the line connecting the center of rotation, and when each grinder comes into contact with the rotating workpiece in each suspension means, each grinder is oriented in the direction in which it is lifted by the rotating workpiece. Since it is suspended, each grinding wheel can contact the deburring part of the rotating workpiece in the right direction to remove burrs, thereby preventing each grinding wheel from digging into the workpiece. It is possible to prevent product defects and excessive wear and tear in the grinding wheel, and it is possible to simultaneously and automatically deburr multiple parts of workpieces with complex shapes with irregularities using various machines. The deburring process can be done in a number of ways, making it possible to significantly improve the efficiency of deburring work.

[Brief explanation of the drawing]

1 is a perspective view of a deburring device showing a first embodiment of the present invention, FIG. 2 is a perspective view showing an example of a workpiece used in the deburring device of the present invention, and FIG. 3 is a perspective view of a deburring device according to a first embodiment of the present invention. 4 is an exploded perspective view of the suspension means in the deburring device of the present invention, FIG. 5 is a side view of the suspension means, FIG. 6 is a front view of the suspension means, and FIG. 7 is an exploded perspective view of the suspension means. A plan view, FIG. 8 is a schematic plan view showing the relationship between the grindstone of the suspension means and the workpiece, FIG. 9 is an enlarged perspective view showing the suspension means, feeding means, and transfer means in this invention, and FIG. 10 is a diagram of the feeding means. FIG. 11 is a partial front view for explaining the operation of the deburring device, and FIG. 1 is a partial perspective view for explaining the operation of the deburring device.
2 is a partial perspective view showing a second embodiment of the deburring device according to the present invention, FIG. 13 is a partial perspective view showing a third embodiment of the deburring device according to the present invention, and FIG. 14 is a partial perspective view showing a third embodiment of the deburring device according to the present invention. It is a partial perspective view which shows the different example of the workpiece|work support rotation means used for a deburring apparatus. DESCRIPTION OF SYMBOLS 1... Bed, 2... Workpiece support rotation means, 3a. 3b... Grinding wheel, 4a, 4b... Air grinder, 5a, 5b... Suspension means, 5a, 6b... Feeding means, 7... Transfer means, 9... Work support shaft, 10 ...Motor, 11...Reduction device, 12...
Power transmission device, 13... Ejector, 45... Swash plate cam, 46... Air cylinder. Agent Patent attorney Tetsuji Iwa (other names) Figure 3 Figure 6 Figure 10 Figure 11 Figure 12rj! J Figure 13 Figure 14 Agony

Claims (1)

[Claims] A plurality of grinders each include a workpiece support and rotation means for supporting and rotating a workpiece, a grinding wheel that comes into contact with a deburring portion of a workpiece to remove burrs, and each of the grinders is suspended so that each grinding wheel is rotated by its own weight. comprising a suspension means that biases downward and in the direction of the workpiece, and a feeding means that supports each of the suspension means and is movable substantially along a line connecting the workpiece contact portion of each grinding wheel and the rotation center, A deburring device characterized in that each of the grinders is suspended from each of the suspension means in a direction in which each of the grinding wheels is lifted up by the rotating workpiece when the grinding wheel comes into contact with the rotating workpiece.